【正文】 ...................................................................................................4 重金屬及有毒物質(zhì) .................................................................................4 第 2章 城市污水處理方案的確定 5 確定污水處理方案的原則 ...................................................................................5 污水處理廠建設(shè)規(guī)模及廠址選擇原則 .................................................................5 污水處理廠建設(shè)規(guī)模及廠址選擇原則 ......................................................5 ....................................................................7 ................................................................................................7 ................................................................................................7 污水處理方案的確定 ..........................................................................................7 處理標(biāo)準(zhǔn)的確定 .....................................................................................8 污水處理路線的選擇 ..............................................................................8 污水處理工藝流程方案介紹 ............................................................................. 10 的因素 ........................................................... 10 工藝方案分析 ......................................................................................... 11 A2/O法 ................................................................................................. 12 SBR法 .................................................................................................. 15 ................................................................................................... 18 A2/O工藝流程 ...................................................................................... 18 SBR 工藝流程 ...................................................................................... 19 主要構(gòu)筑物的選擇 ........................................................................................... 20 格柵 ..................................................................................................... 20 進(jìn)水閘井 .............................................................................................. 20 污 水 泵 房 .............................................................................................. 20 第 II 頁 共 III 頁 沉砂池 ................................................................................................. 21 SBR 反應(yīng)池 .......................................................................................... 22 消毒 ..................................................................................................... 22 濃縮池 ................................................................................................. 23 污泥脫水 .............................................................................................. 23 第 3章 污水處理系統(tǒng)的設(shè)計(jì) 24 中格柵 ............................................................................................................. 24 設(shè)計(jì)要求 .............................................................................................. 24 設(shè)計(jì)流量 .............................................................................................. 25 格柵計(jì)算 ................................................................................................ 25 格柵的比較選型 ................................................................................... 27 污水提升泵站 .................................................................................................. 28 設(shè)計(jì)說明 .............................................................................................. 28 一般規(guī)定 .............................................................................................. 28 選泵 ..................................................................................................... 29 吸、壓水管路實(shí)際水頭損失的計(jì)算 ....................................................... 30 水泵機(jī)組基礎(chǔ)的確定和污水泵站的布置 ................................................ 32 泵房高度的確定 ................................................................................... 32 泵房附屬設(shè)施及尺寸的確定 .................................................................. 33 泵房值班室、控制室及配電間 .............................................................. 34 細(xì)格柵 ............................................................................................................. 34 曝氣沉砂池 ...................................................................................................... 36 設(shè)計(jì)說明 .............................................................................................. 36 設(shè)計(jì)參數(shù) .............................................................................................. 36 沉砂池比較 .......................................................................................... 37 池體設(shè)計(jì)計(jì)算 ....................................................................................... 37 曝氣系統(tǒng)設(shè)計(jì)計(jì)算 ................................................................................ 38 進(jìn)水，出水及撇油 ................................................................................ 38 排砂量計(jì)算 .......................................................................................... 38 提砂泵房與砂水分離器 .................................................................................... 40 配水井 ............................................................................................................. 41 比較選型 .............................................................................................. 41 設(shè) 計(jì)要求 .............................................................................................. 41 設(shè)計(jì)計(jì)算 .............................................................................................. 42 SBR反應(yīng)器設(shè)計(jì) 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